vendor/codeages/omnipay-alipay/src/Requests/LegacyAppPurchaseRequest.php

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<?php

namespace Omnipay\Alipay\Requests;

use Omnipay\Alipay\Common\Signer;
use Omnipay\Alipay\Responses\LegacyAppPurchaseResponse;
use Omnipay\Common\Message\ResponseInterface;
/**
 * Class LegacyAppPurchaseRequest
 * @package Omnipay\Alipay\Requests
 * @link    https://doc.open.alipay.com/docs/doc.htm?treeId=59&articleId=103663&docType=1
 */
class LegacyAppPurchaseRequest extends \Omnipay\Alipay\Requests\AbstractLegacyRequest
{
    protected $service = 'mobile.securitypay.pay';
    protected $privateKey;
    /**
     * Get the raw data array for this message. The format of this varies from gateway to
     * gateway, but will usually be either an associative array, or a SimpleXMLElement.
     *
     * @return mixed
     */
    public function getData()
    {
        $this->validateParams();
        $params = $this->getParamsToSign();
        $signer = new \Omnipay\Alipay\Common\Signer($params);
        $sign = $signer->signWithRSA($this->privateKey);
        $resp['order_string'] = sprintf('%s&sign="%s"&sign_type="RSA"', $signer->getContentToSign(), urlencode($sign));
        return $resp;
    }
    protected function validateParams()
    {
        $this->validate('partner', '_input_charset', 'sign_type', 'notify_url', 'out_trade_no', 'subject', 'total_fee', 'payment_type');
    }
    private function getParamsToSign()
    {
        $params = $this->parameters->all();
        $params['service'] = $this->service;
        $params = array_filter($params, 'strlen');
        $params = array_map(function ($v) {
            return sprintf('"%s"', $v);
        }, $params);
        return $params;
    }
    /**
     * Send the request with specified data
     *
     * @param  mixed $data The data to send
     *
     * @return ResponseInterface
     */
    public function sendData($data)
    {
        return $this->response = new \Omnipay\Alipay\Responses\LegacyAppPurchaseResponse($this, $data);
    }
    /**
     * @return mixed
     */
    public function getPartner()